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73-35A-05 Series
T-Pass, Transmit Combiners
73-35A-05 Series

73-35A-05 Series, 118-136 MHz, T-Pass® Combiners
Broadband architecture of the T-Pass® circuit and coaxial cavities mitigates equipment obsolescence and facilitates ease of system reconfiguration when re-banding is necessary. Each System configured for optimum performance. Ideal for applications with minimal guard band between transmit and receive frequencies.

Models
  • 73-35A-05-2B-nn
  • 73-35A-05-2D-nn
  1. -nn in model number represents the number of channels.
  2. Consult factory on T-Pass multicouplers for frequencies below 118 MHz.
  3. Models available with 5W/60W loads. Same specifications as 25W and 100W models, except load power.
  4. -MC option reduces maximum number of channels to ten 10-inch or twelve 6.625-inch channels per rack.
  5. -LR systems are tuned and tested on customer frequencies, then disassembled for shipping.
  6. Rack depth with cavity tuning rods at maximum frequency. Rod travel is approximately 3.3” (84 mm).
73-35A-05 Series Systems (10" Cavity Diameter)
Tx-Tx Sepration Cavity Loss Maximum Power
1 MHz -1.5 dB 150 W
250 kHz -1.5 dB 150 W
100 kHz -1.5 dB 150 W
75 kHz -2.0 dB 150 W
50 kHz -2.5 dB 130 W

Loss (dB) vs. No. of channels
Tx-Tx Sepration 2 4 12
1 MHz -2.6 -2.7 -3.2
250 kHz -2.6 -2.9 -3.4
100 kHz -2.9 -3.6 -4.4
75 kHz -3.5 -4.1 -4.9
50 kHz -4.1 -4.8 -5.7
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T-Pass, Transmit Combiners
73-35A-05 Series
product specifications:
Item No
73-35A-05 Series
Item Name
118-136 MHz, T-Pass Combiner, 10" Cavity
Frequency Range
118-136 MHz
Cavity Type and Diameter
Quarterwave, 10” (254 mm)
Maximum Continuous Transmit Power
See Model Matrix
Isolator Load Pwr Continuous
73-35A-05-2B-nn: 5 W/25 W
73-35A-05-2D-nn: 5 W/100 W
Min Tx-Tx Separation at Cavity Loss
80 kHz @ -1.5 dB
45 kHz @ -2.5 dB
Typical Tx-Tx Isolation at Min Separation
-70 dB
Typical Antenna - Tx Isolation
-60 dB
Typical Tx Noise Suppression
Depends on cavity loss
Impedance Ω
50
Maximum Input Return Loss - VSWR
-20 dB (1.22:1)
Temperature Range
-30 to +60 °C
Connectors - Input and Antenna
N
Mounting
Peg Rack®
Mounting Options
MC:19” rackmount adapter plates, 17.5” high
LR: System supplied without Peg Rack® [Notes 4,5]
Maximum Channels - Rack
12 [Note 4]
Dimensions
79.5” x 24” x 42.5” (H x W x D) [Note 6]
(2019 x 610 x 1080 mm)
Weight - Basic Single Channel
73-35A-05-2B-nn: 44 lbs. (19.9 kg)
73-35A-05-2D-nn: 45 lbs. (20.4 kg)
Weight - Expansion Channel Assy
73-35A-05-2B-nn: 21 lbs. (9.5 kg)
73-35A-05-2D-nn: 22 lbs. (10.0 kg)
accessories:
93-00 Series
T-Pass, Transmit Combiner Racks